This has always been the way with Coinmarketcap. But it is not a big deal. Coinmarketcap is not a site where one could verify whether a coin or token is legit or not. It
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That's true, I've seen a lot of shitty coins that was listed before on the Coinmarket cap and it's on the "Trend" section too which give that coin more exposure but that doesn't mean they are legitimate and trusted project, they don't have any strict requirements and they are just there to provide data about that coin and not encourage to buy that coins. It's the job of the investor if they are going to invest to that project or not but the Coinmarketcap will just show data of that coin, brief information and where it can be exchanged.
Coinmarket, coingecko, and some other similar sites are useful for a quick review of some projects. Except for info where some coins/tokens can be exchanged, there are direct links to their sites, along with the price statistic. But as both of you pointed out, people should not rely only on these sites when they are looking for investments. It can be a good start, but nothing more than that...
When it comes to "new tokens on Coinmarketcap" I tried to remember 2015 and how cryptos were listed at that time... anyway, this is how it looks now:
I found an old image on the internet:
So 20k new listings in some very short period...
I guess it's the question when we will see 30k, maybe this year?